1997 Mazda 626 electrical

Tiny
OBARO
  • MEMBER
  • 1997 MAZDA 626
  • 4 CYL
  • FWD
  • MANUAL
  • 260,000 MILES
I found out that my car is idling low, and there is always oil in two of my cylinders. Only to discover this morning that those two cylinders that oil is inside has no current in the plugs wire or cable. No.1 and No.4: but the other two has current. What can likely be the cause and how can I repair or trace the fault. Can that cause oil to be in those two cylinders? Please I need your response
Wednesday, December 11th, 2013 AT 10:54 AM

7 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check your spark plugs if they are soaked then try replacing htem first. But check compression aswell as it may be low compression and at your mileage would mean a rebuild of engine.
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Wednesday, December 11th, 2013 AT 12:19 PM
Tiny
OBARO
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  • 15 POSTS
I have changed the plugs they are new ones, as of the compression it is okey, the problem is that the distrubitor wire itself is what I am talking about, no current is found the two lower cables which is No.1 and No.4.
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Wednesday, December 11th, 2013 AT 4:25 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check resistance of plug wires should be 5000 ohms per foot then if they are ok check for a cracked dist cap. Make sure to move wires around while holding volt meter leads to it. Then look for crackes in cap or carbon tracing which look like a pencil mark inside it.
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Wednesday, December 11th, 2013 AT 4:32 PM
Tiny
OBARO
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There is a crack and a shorted wire which carry currents to those plugs. I have looped the wire, but only one is working except the cracked one which is leaking current. The cylinder to that plug (No. 4) is always flooded with oil, can that failed plug cause oil to flow into that cylinder? Even with plug adaptor the plug is always soaked. Please I want to know
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Friday, December 13th, 2013 AT 9:38 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Fix the crack and shorted wire if you don't you'll continue to get your oil/gas soaked plug. Also check engine compression.
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Saturday, December 14th, 2013 AT 6:03 AM
Tiny
OBARO
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Is it really certain that if I replace the coil wire and plugs the oil will stop comming to the cylinder?
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Saturday, December 14th, 2013 AT 8:53 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Part of it is because the cylinder isn't firing tha tis why I told you to check compression it cold be bad valve seals or something else but until you do what I asked for you to do it is a mute point to keep asking the same question over and over. I have no further suggestions for you.
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Saturday, December 14th, 2013 AT 9:04 AM

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